201
|
Li P, Zhang M, Ji D, Qiu M, Liu L. Relationship between equilibrium potential and radius of lanthanides electrolyzed on the zinc cathode. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2019.02.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
202
|
Qiu M, An M, Bian M, Yu S, Liu C, Liu Q. Terrestrosin D from Tribulus terrestris attenuates bleomycin-induced inflammation and suppresses fibrotic changes in the lungs of mice. Pharm Biol 2019; 57:694-700. [PMID: 31608748 PMCID: PMC6807862 DOI: 10.1080/13880209.2019.1672754] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Context: Terrestrosin D (TED), from Tribulus terrestris L. (Zygophyllaceae), exhibits anti-tumour and anti-inflammatory activities. However, its effects on bleomycin (BLM)-induced pulmonary inflammation and the subsequent fibrotic changes remain unclear. Objective: To examine the anti-inflammatory and anti-fibrotic effects of TED against BLM in murine pulmonary tissues. Materials and methods: Male SPF mice received saline (control), TED (10 mg/kg), BLM (2.5 mg/kg), or BLM (2.5 mg/kg) + TED (10 mg/kg) group. BLM was administered as a single intranasal inoculation, and TED was intraperitoneally administered once daily. After 2 and 6 weeks of treatment, cell number and differentiation (Giemsa staining) and TNF-α, IL-6, IL-8, TGF-β1, and PDGF-AB levels (ELISA) were determined in the bronchoalveolar lavage fluid (BALF). Hydroxyproline (Hyp) content in the left pulmonary tissue was also determined (ELISA). The right pulmonary tissue was H&E-stained and assessed for the severity of pulmonary fibrosis using the Ashcroft scoring method. Compared with the BLM group, TED decreased inflammatory cell infiltration; number of macrophages (p < 0.05), neutrophils (p < 0.05), lymphocytes (p < 0.05); percentage of macrophages in the monocyte-macrophage system (p < 0.05), and levels of TNF-α (p < 0.01), IL-6 (p < 0.01), IL-8 (p < 0.05), TGF-β1 (p < 0.05), and PDGF-AB (p < 0.05) in the BALF. TED also reduced Hyp content (p < 0.05) in the pulmonary tissue and attenuated the BLM-induced deterioration in lung histopathology. Discussion and conclusions: TED can inhibit BLM-induced inflammation and fibrosis in the lungs of mice, which may be related to reduced inflammatory and fibrotic markers. These results could be further tested in humans through clinical studies.
Collapse
Affiliation(s)
- Min Qiu
- Department of Pharmacy, Baotou Medical College, Baotou, China
| | - Ming An
- Department of Pharmacy, Baotou Medical College, Baotou, China
| | - Mengni Bian
- Department of Pharmacy, Baotou Medical College, Baotou, China
| | - Shunbang Yu
- School of Health Sciences, University of Newcastle, Newcastle, Australia
| | - Changxiao Liu
- Tianjin Institute of Pharmaceutical Research, Tianjin, China
| | - Quanli Liu
- Department of Pharmacy, Baotou Medical College, Baotou, China
- CONTACT Quanli Liu Department of Pharmacy, Baotou Medical College, 31 Jianshe Road, Baotou, Inner Mongolia 014060, China
| |
Collapse
|
203
|
Qiu M, Xue C, Zhang L. Piperine alkaloid induces anticancer and apoptotic effects in cisplatin resistant ovarian carcinoma by inducing G2/M phase cell cycle arrest, caspase activation and inhibition of cell migration and PI3K/Akt/GSK3β signalling pathway. J BUON 2019; 24:2316-2321. [PMID: 31983100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
PURPOSE Ovarian cancer is one the prevalent cancers in women and is responsible for 5% of all the cancer-related mortality. Owing to late diagnosis, frequent relapses, side effects of chemotherapy, development of drug resistance, there is pressing need to screen out novel and effective treatment options. Herein, we examined the anticancer effects of a secoiridoid glycoside Piperine against ovarian cancer cells. METHODS CCK8 assay was used to examine the anti-proliferative effects. DAPI and annexin V/propidium iodide (PI) staining assays were used to examine apoptotic cell death. Cell cycle analysis was performed by flow cytometry. The protein expressions were examined by western blotting. RESULTS Piperine inhibited the growth of the ovarian cancer OVACAR-3 cell with IC50 of 28 µM. In contrast, Piperine had low cytotoxic effects on the normal astrocytes (SV40) cells with an IC50 of 200 µM. Also, Piperine exerted antiproliferative effects on the OVACAR-3 ovarian cancer cells by apoptotic cell death. This was concomitant with upregulation of apoptotic proteins such as caspase 3 and 9 and Bax expressions. Piperine also induced arrest of the OVACAR-3 cells at the G2/M phase of the cell cycle. Finally, Piperine also blocked the PI3K/Akt/GSK3β signal transduction pathway in OVACAR-3 ovarian cancer cells. CONCLUSIONS These results suggest that Piperine exerts potent anticancer effects on ovarian cancer cells and may prove beneficial in the management of ovarian cancer.
Collapse
Affiliation(s)
- Min Qiu
- Department of Obstetrics and Gynecology, Changzhou First People's Hospital, the Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China, 213003
| | | | | |
Collapse
|
204
|
Xiang L, Song Y, Qiu M, Su Y. Synthesis of Branched Poly(butyl acrylate) Using the Strathclyde Method in Continuous-Flow Microreactors. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03906] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
205
|
Wang X, Qiu M, Deng C, Cheng R, Zhong Z. Targeted and Reduction-Sensitive Cross-Linked PLGA Nanotherapeutics for Safer and Enhanced Chemotherapy of Malignant Melanoma. ACS Biomater Sci Eng 2019; 6:2621-2629. [DOI: 10.1021/acsbiomaterials.9b00946] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xiuxiu Wang
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, People’s Republic of China
| | - Min Qiu
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, People’s Republic of China
| | - Chao Deng
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, People’s Republic of China
| | - Ru Cheng
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, People’s Republic of China
| | - Zhiyuan Zhong
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, People’s Republic of China
| |
Collapse
|
206
|
Li J, Xu J, Cui Y, Wang L, Wang B, Wang Q, Zhang X, Qiu M, Zhang Z. Mesenchymal Sufu Regulates Development of Mandibular Molars via Shh Signaling. J Dent Res 2019; 98:1348-1356. [PMID: 31499014 DOI: 10.1177/0022034519872679] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Sonic hedgehog (Shh) in dental epithelium regulates tooth morphogenesis by epithelial-mesenchymal signaling transduction. However, the action of Shh signaling regulation in this process is not well understood. Here we find that mesenchymal Suppressor of Fused (Sufu), a major negative regulator of Shh signaling, plays an important role in modulating the tooth germ morphogenesis during the bud-to-cap stage transition. Deletion of Sufu in dental mesenchyme by Dermo1-Cre mice leads to delayed development of mandibular molar into cap stage with defect of primary enamel knot (EK) formation. We show the disruption of cell proliferation and programmed cell death in dental epithelium and mesenchyme in Sufu mutants. Epithelial-specific adhesion molecule E-cadherin is evidently reduced in the bilateral basal cells of tooth germ at E14.5. The cells in the presumptive EK, predominantly expressing P-cadherin, appear stratified but fail to condense. Moreover, the transcripts of primary EK marker genes, including Shh, Fgf4, and p21, are significantly decreased compared to controls. In contrast, we find that deficiency of Sufu results in elevation of Shh signaling in mesenchyme, indicated by the significant upregulation of Gli1 and Ptch1. Meanwhile, the expression of Bmp4 and Fgf3, the critical factors of mesenchymal-epithelial induction, is significantly inhibited in dental mesenchyme. Furthermore, the expression of Runx2 experiences a transient decrease at the bud stage. Taken together, these data suggest that mesenchymal Sufu is necessary for tuning the Shh signaling, which may act as an upstream modulator of Bmp4 and Fgf3 to coordinate the interplay between the dental mesenchyme and epithelium of tooth germ.
Collapse
Affiliation(s)
- J Li
- Institute of Life Sciences, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - J Xu
- Institute of Life Sciences, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Y Cui
- Institute of Life Sciences, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - L Wang
- Institute of Life Sciences, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - B Wang
- Institute of Life Sciences, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Q Wang
- Institute of Life Sciences, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - X Zhang
- Institute of Life Sciences, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - M Qiu
- Institute of Life Sciences, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Z Zhang
- Institute of Life Sciences, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| |
Collapse
|
207
|
Qiu M, Zhang YW, Fei YY, Liu C, Deng SH, He W, Lu M, Lu J, Hou XF, Ma LL. [Retrospective study of diagnosis and treatment of renal oncocytoma]. Beijing Da Xue Xue Bao Yi Xue Ban 2019; 51:689-693. [PMID: 31420623 DOI: 10.19723/j.issn.1671-167x.2019.04.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To summarize the experience of diagnosis and surgical treatment of renal oncocytoma, and to evaluate the surgical results based on follow-up results, in order to find the best strategy. METHODS In the study, 21 cases with renal oncocytoma from December 2003 to April 2016 in Peking University Third Hospital were retrospectively analyzed, including 4 males, and 17 females, with 10 cases on the right side and 11 cases on the left side. Their age was between 15 to 80 years (average: 58 years). Ultrasound or CT examination after admission was conducted. Ultrasound examination showed solid nodules. CT manifestations were solid masses with enhancement, and the tumor size was between 1.5 cm to 6.5 cm (average: 3.3 cm). Of the 21 cases, 9 were located in the middle of kidney, 7 were located in the upper pole, and 5 were located in the lower pole. After preoperative examination, according to the size and location of the tumor, laparoscopic partial nephrectomy or laparoscopic nephrectomy was performed, respectively. RESULTS All the operations were successful, in which 17 cases underwent laparoscopic partial nephrectomy (including 3 cases which were converted to open surgery), and 4 cases underwent laparoscopic radical nephrectomy. The operation time ranged from 75 to 274 min (mean: 144 min), and the blood loss ranged from 10 to 1 000 mL (mean: 115 mL). The postoperative hospital stay time ranged from 6 to 13 d (average: 8.2 d). The pathological results were all renal oncocytoma. In the study, 17 cases were followed up while 4 cases were lost to follow-up. The follow-up time ranged from 12 to 175 months (mean: 44 months). One case died in 20 months after operation with unknown reason, and there were no recurrence or metastasis in the other 16 cases. CONCLUSION Renal oncocytoma is a benign tumor with good prognosis. Enhanced CT is an effective diagnostic method in assistant examination, but it is difficult to differentiate clear cell carcinoma only from the naked eye. It is worthwhile to measure CT value at different stages of the tumor by picture archiving and communication systems (PACS), and to compare with CT value of adjacent kidney tissue may improve the diagnostic efficiency of CT. Laparoscopic surgery is an effective treatment for renal oncocytoma. We recommend laparoscopic partial nephrectomy for the patients with renal oncocytoma as the best choice if conditions permit.
Collapse
Affiliation(s)
- M Qiu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Y W Zhang
- Department of Urology, Taiyuan People's Hospital, Taiyuan 030001, China
| | - Y Y Fei
- Department of Urology, Jixi Jikuang Hospital, Jixi 158100, Heilongjiang, China
| | - C Liu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - S H Deng
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - W He
- Department of Radiology, Peking University Third Hospital, Beijing 100191, China
| | - M Lu
- Department of Pathology, Peking University Third Hospital, Beijing 100191, China
| | - J Lu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - X F Hou
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - L L Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
208
|
Qiu M, Glass Z, Xu Q. Nonviral Nanoparticles for CRISPR-Based Genome Editing: Is It Just a Simple Adaption of What Have Been Developed for Nucleic Acid Delivery? Biomacromolecules 2019; 20:3333-3339. [PMID: 31342740 DOI: 10.1021/acs.biomac.9b00783] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Genome-editing technologies hold tremendous potential for treating genetic diseases. However, the efficient and safe delivery of genome-editing elements to the location of interest, and the achievement of specific targeted gene correction without off-target side effect remains a big challenge. In this Perspective, we highlight recent developments and discuss the challenges of nonviral nanoparticles for the delivery of genome-editing tools. Finally, we will propose promising strategies to improve the delivery efficacy and advance the clinical translation of gene-editing technology.
Collapse
Affiliation(s)
- Min Qiu
- Department of Biomedical Engineering , Tufts University , 4 Colby Street , Medford , Massachusetts 02155 , United States
| | - Zachary Glass
- Department of Biomedical Engineering , Tufts University , 4 Colby Street , Medford , Massachusetts 02155 , United States
| | - Qiaobing Xu
- Department of Biomedical Engineering , Tufts University , 4 Colby Street , Medford , Massachusetts 02155 , United States
| |
Collapse
|
209
|
Cheng W, Lin M, Qiu M, Kong L, Xu Y, Li Y, Wang Y, Ye W, Dong S, He S, Wang Y. Chitin synthase is involved in vegetative growth, asexual reproduction and pathogenesis of Phytophthora capsici and Phytophthora sojae. Environ Microbiol 2019; 21:4537-4547. [PMID: 31314944 DOI: 10.1111/1462-2920.14744] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 07/13/2019] [Accepted: 07/13/2019] [Indexed: 11/29/2022]
Abstract
Chitin is a structural and functional component of the fungal cell wall and also serves as a pathogen-associated molecular pattern (PAMP) that triggers the innate immune responses of host plants. However, no or very little chitin is found in the fungus-like oomycetes. In Phytophthora spp., the presence of chitin has not been demonstrated so far, although putative chitin synthase (CHS) genes, which encode the enzymes that synthesize chitin, are present in their genomes. Here, we revealed that chitin is present in the zoospores and released sporangia of Phytophthora, and this is most consistent with the transcriptional pattern of PcCHS in Phytophthora capsici and PsCHS1 in Phytophthora sojae. Disruption of the CHS genes indicated that PcCHS and PsCHS1, but not PsCHS2 (which exhibited very weak transcription), have similar functions involved in mycelial growth, sporangial production, zoospore release and the pathogenesis of P. capsici and P. sojae. We also suggest that chitin in the zoospores of P. capsici can act as a PAMP that is recognized by the chitin receptors AtLYK5 or AtCERK1 of Arabidopsis. These results provide new insights into the biological significance of chitin and CHSs in Phytophthora and help with the identification of potential targets for disease control.
Collapse
Affiliation(s)
- Wei Cheng
- National Education Minister Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.,Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.,Department of Plant Pathology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Menglan Lin
- National Education Minister Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.,Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Min Qiu
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.,The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Liang Kong
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.,The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Yuanpeng Xu
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.,The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Yaning Li
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.,The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Yan Wang
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.,The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Wenwu Ye
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.,The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Suomeng Dong
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.,The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| | - Shuilin He
- National Education Minister Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.,Key Laboratory of Applied Genetics of Universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Yuanchao Wang
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.,The Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Jiangsu, 210095, China
| |
Collapse
|
210
|
Qiu M, Ouyang J, Wei Y, Zhang J, Lan Q, Deng C, Zhong Z. Selective Cell Penetrating Peptide-Functionalized Envelope-Type Chimeric Lipopepsomes Boost Systemic RNAi Therapy for Lung Tumors. Adv Healthc Mater 2019; 8:e1900500. [PMID: 31231966 DOI: 10.1002/adhm.201900500] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 05/31/2019] [Indexed: 12/13/2022]
Abstract
Small interfering RNA (siRNA) is considered a highly specific and potent biotherapeutic that holds tremendous potential for the treatment of various diseases. The clinical translation of siRNA is, however, greatly impeded by the lack of safe and efficient delivery vehicles in vivo. Here, the development of selective cell penetrating peptide (CPP33)-functionalized chimeric lipopepsomes (CPP33-CLP) for efficient encapsulation and selective delivery of polo-like kinase 1 specific siRNA (siPLK1) to orthotopic A549 human lung tumor in vivo is reported. Interestingly, siRNA is tightly encapsulated into CPP33-CLP with a superb encapsulation efficiency of over 95% owing to the thick strong electrostatic interactions. Notably, siPLK1-loaded CPP33-CLP (siPLK1-CPP33-CLP) is selectively internalized by A549 human lung cancer cells, efficiently escapes from endosomes, and swiftly releases siRNA into the cytoplasm, affording a significant sequence-specific gene silencing in vitro. Moreover, siPLK1-CPP33-CLP exhibits prolonged blood circulation, enhanced tumor accumulation, effective suppression of tumor growth, and considerably elevated survival time of orthotopic A549 human lung tumor-bearing nude mice. These chimeric lipopepsomes appear as an attractive and potent nanoplatform for safe and targeted siRNA delivery.
Collapse
Affiliation(s)
- Min Qiu
- Biomedical Polymers Laboratory, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215123, China
| | - Jia Ouyang
- Department of Neurosurgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215123, China
| | - Yaohua Wei
- Biomedical Polymers Laboratory, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215123, China
| | - Jian Zhang
- Biomedical Polymers Laboratory, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215123, China
| | - Qing Lan
- Department of Neurosurgery, The Second Affiliated Hospital of Soochow University, Suzhou, 215123, China
| | - Chao Deng
- Biomedical Polymers Laboratory, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215123, China
| | - Zhiyuan Zhong
- Biomedical Polymers Laboratory, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, 215123, China
| |
Collapse
|
211
|
Ge J, Zhong XS, Xiong YQ, Qiu M, Huo ST, Chen XJ, Mo Y, Cheng MJ, Chen Q. Methicillin-resistant Staphylococcus aureus among urban rodents, house shrews, and patients in Guangzhou, Southern China. BMC Vet Res 2019; 15:260. [PMID: 31345215 PMCID: PMC6659301 DOI: 10.1186/s12917-019-2012-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 07/16/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The transmission of methicillin-resistant Staphylococcus aureus (MRSA) between humans and animals has been identified in a number of countries. In this study, MRSA in urban rodents and shrews in a community was investigated. Further, comparisons of MRSA isolates from rodents, shrews, and humans were conducted to evaluate the relationships of these isolates from different origins. RESULTS Between 2015 and 2016, 397 oropharynx samples from 212 rodents and 185 shrews, and 8 MRSA isolates from hospital patients were collected. Twelve MRSA were isolated from the small mammals (3.0, 95%CI: 1.3-4.7%), including 11 isolates from rodents and one from a shrew. Three MRSA isolates from Rattus norvegicus were PVL-positive, and seven isolates were IEC-negative (one from Suncus murinus, five from Rattus norvegicus, and one from a patient). The spa type, MLST, and antimicrobial resistance patterns showed that the MRSA retrieved from rodents and shrews are likely related to human strains. CONCLUSION MRSA derived from rodent shares similar antimicrobial resistance and molecular characteristics to those from humans, suggesting that urban rodents may play as maintenance host or vectors for MRSA which is important to human health.
Collapse
Affiliation(s)
- Jing Ge
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Xue-Shan Zhong
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yi-Quan Xiong
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Min Qiu
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Shu-Ting Huo
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Xue-Jiao Chen
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yun Mo
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Ming-Ji Cheng
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Qing Chen
- Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China.
| |
Collapse
|
212
|
Abstract
Nanotechnology and nanoscience are enabled by nanofabrication. Electron-beam lithography, which makes 2D patterns down to a few nanometers, is one of the fundamental pillars of nanofabrication. Recently, significant progress in 3D electron-beam-based nanofabrication has been made, such as the emerging ice lithography technology, in which ice thin-films are patterned by a focused electron-beam. Here, we review the history and progress of ice lithography, and focus on its applications in efficient 3D nanofabrication and additive manufacturing or nanoscale 3D printing. The finest linewidth made using frozen octane is below 5 nm, and nanostructures can be fabricated in selected areas on non-planar surfaces such as freely suspended nanotubes or nanowires. As developing custom instruments is required to advance this emerging technology, we discuss the evolution of ice lithography instruments and highlight major instrumentation advances. Finally, we present the perspectives of 3D printing of functional materials using organic ices. We believe that we barely scratched the surface of this new and exciting research area, and we hope that this review will stimulate cutting-edge and interdisciplinary research that exploits the undiscovered potentials of ice lithography for 3D photonics, electronics and 3D nanodevices for biology and medicine.
Collapse
Affiliation(s)
- Ding Zhao
- National Centre for Nano Fabrication and Characterization, Technical University of Denmark, Kongens Lyngby, 2800, Denmark
| | - Anpan Han
- Department of Mechanical Engineering, Technical University of Denmark, Kongens Lyngby, 2800, Denmark
| | - Min Qiu
- Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, Hangzhou 310024, China; Institute of Advanced Technology, Westlake Institute for Advanced Study, Hangzhou 310024, China.
| |
Collapse
|
213
|
Li QW, Liu XJ, Li JH, Zhang GQ, Chen SM, Huang CL, Qiu M, Li YL, Duan P, Weng YJ, Zhang XY, Huang CY. Applying WCACG modified process is beneficial on reduced door-to-balloon time of acute STEMI patients. Biomedicine (Taipei) 2019; 9:10. [PMID: 31124456 PMCID: PMC6533935 DOI: 10.1051/bmdcn/2019090210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 02/18/2019] [Indexed: 11/17/2022] Open
Abstract
Background: Various systems have employed with the objective to reduce the time from emergency medical services contact to balloon inflammation for ST-elevation myocardial infraction (STEMI) patients. The WCACG message system was used to an alternative communication platform to improve confirmation of the diagnosis and movement to treatment, resulted in shorten the door-to-balloon (D-to-B) time for STEMI patients. Methods: We collected 366 STEMI patients admitted at the Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Department of Cardiology, during the period from June 2013 to October 2015. The patients were divided into two groups one underwent the current GC processes and the other group was handled using WCACG system. We compared between two groups with several indicators including D-to-B time, duration of hospitalization, associated costs, and incidence of adverse cardiovascular events. Results: The results show that the new method with WCACG system significantly reduced the average D-to-B time (from 100.42 ± 25.14 mins to 79.81 ± 20.51 mins, P < 0.05) compared to the GC processes, and also reduced the duration, costs and undesirable cardiac incidence during hospitalization. Conclusions: The modified WCACG process is an applicable system to save pieces of time and efficiently integrate the opinions of experts in emergency.
Collapse
Affiliation(s)
- Qiao-Wen Li
- Department of Cardiology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Xiao-Jian Liu
- Department of Cardiology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Jin-Hua Li
- Department of Cardiology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Guo-Qi Zhang
- Department of Cardiology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Su-Min Chen
- Department of Cardiology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Chao-Long Huang
- Department of Cardiology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Min Qiu
- Department of Cardiology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Yue-Liang Li
- Department of Cardiology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Peng Duan
- Department of Cardiology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Yi-Jiun Weng
- Department of Cardiology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China - Graduate Institute of Basic Medical Science, China Medical University, Taichung 404, Taiwan
| | - Xiao-Yong Zhang
- Department of Cardiology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Chih-Yang Huang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung 404, Taiwan - Graduate Institute of Chinese Medical Science, China Medical University, Taichung 404, Taiwan - Department of Health and Nutrition Biotechnology, Asia University, Taichung 413, Taiwan
| |
Collapse
|
214
|
Rades N, Achazi K, Qiu M, Deng C, Haag R, Zhong Z, Licha K. Reductively cleavable polymer-drug conjugates based on dendritic polyglycerol sulfate and monomethyl auristatin E as anticancer drugs. J Control Release 2019; 300:13-21. [DOI: 10.1016/j.jconrel.2019.01.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/18/2019] [Accepted: 01/24/2019] [Indexed: 10/27/2022]
|
215
|
|
216
|
Xiong Y, Fang Y, Qian Y, Liu Y, Yang X, Huang H, Huang H, Li Y, Zhang X, Zhang Z, Dong M, Qiu M, Zhu XJ, Zhang Z. Wnt Production in Dental Epithelium Is Crucial for Tooth Differentiation. J Dent Res 2019; 98:580-588. [PMID: 30894046 DOI: 10.1177/0022034519835194] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The Wnt ligands display varied spatiotemporal expression in the epithelium and mesenchyme in the developing tooth. Thus far, the actions of these differentially expressed Wnt ligands on tooth development are not clear. Shh expression specifies the odontogenic epithelium during initiation and is consistently restricted to the dental epithelium during tooth development. In this study, we inactivate Wntless ( Wls), the key regulator for Wnt trafficking, by Shh-Cre to investigate how the Wnt ligands produced in the dental epithelium lineage act on tooth development. We find that conditional knockout of Wls by Shh-Cre leads to defective ameloblast and odontoblast differentiation. WlsShh-Cre teeth display reduced canonical Wnt signaling activity in the inner enamel epithelium and the underlying mesenchyme at the early bell stage, as exhibited by target gene expression and BAT-gal staining. The expression of Wnt5a and Wnt10b is not changed in WlsShh-Cre teeth. By contrast, Wnt10a expression is significantly increased in response to epithelial Wls deficiency. In addition, the expression of Hedgehog signaling pathway components Shh, Gli1, and Patched1 was greatly decreased in WlsShh-Cre teeth. Epithelial Wls loss of function in Shh lineage also leads to aberrant cell proliferation in dental epithelium and mesenchyme at embryonic day 16.5; however, the cell apoptosis is unaffected. Moreover, we find that Decorin and Col1a1, the key markers for odontoblast differentiation that are downregulated in WlsShh-Cre teeth, act as direct downstream targets of the canonical Wnt signaling pathway by chromatin immunoprecipitation analysis. Additionally, Decorin and Col1a1 expression can be increased by lithium chloride (LiCl) treatment in the in vitro tooth explants. Taken together, our results suggest that the spatial expression of Wnt ligands within the dental epithelial lineage regulates the differentiation of tooth structures in later stages.
Collapse
Affiliation(s)
- Y Xiong
- 1 Institute of Life Sciences, College of Life and Environmental Science, Hangzhou Normal University, Zhejiang, China
| | - Y Fang
- 1 Institute of Life Sciences, College of Life and Environmental Science, Hangzhou Normal University, Zhejiang, China
| | - Y Qian
- 2 Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Y Liu
- 3 The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - X Yang
- 1 Institute of Life Sciences, College of Life and Environmental Science, Hangzhou Normal University, Zhejiang, China
| | - H Huang
- 1 Institute of Life Sciences, College of Life and Environmental Science, Hangzhou Normal University, Zhejiang, China
| | - H Huang
- 1 Institute of Life Sciences, College of Life and Environmental Science, Hangzhou Normal University, Zhejiang, China
| | - Y Li
- 1 Institute of Life Sciences, College of Life and Environmental Science, Hangzhou Normal University, Zhejiang, China
| | - X Zhang
- 1 Institute of Life Sciences, College of Life and Environmental Science, Hangzhou Normal University, Zhejiang, China
| | - Z Zhang
- 4 Department of Ophthalmology, Tulane Medical Center, Tulane University, New Orleans, LA, USA
| | - M Dong
- 2 Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - M Qiu
- 1 Institute of Life Sciences, College of Life and Environmental Science, Hangzhou Normal University, Zhejiang, China
| | - X J Zhu
- 1 Institute of Life Sciences, College of Life and Environmental Science, Hangzhou Normal University, Zhejiang, China
| | - Z Zhang
- 1 Institute of Life Sciences, College of Life and Environmental Science, Hangzhou Normal University, Zhejiang, China
| |
Collapse
|
217
|
Scott K, Jessani N, Qiu M, Bennett S. Developing more participatory and accountable institutions for health: identifying health system research priorities for the Sustainable Development Goal-era. Health Policy Plan 2019; 33:975-987. [PMID: 30247610 PMCID: PMC6263024 DOI: 10.1093/heapol/czy079] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/13/2018] [Indexed: 11/13/2022] Open
Abstract
Health policy and systems research (HPSR) is vital to guiding global institutions, funders, policymakers, activists and implementers in developing and enacting strategies to achieve the Sustainable Development Goals. We undertook a multi-stage participatory process to identify priority research questions relevant to improving accountability within health systems. We conducted interviews (n = 54) and focus group discussions (n = 2) with policymakers from international and national bodies (ministries of health, other government agencies and technical support institutions) across the WHO regions. Respondents were asked to reflect on challenges and current policy discussions related to health systems accountability, and to identify their pressing research needs. We also conducted an overview of reviews (n = 34) to determine the current status of knowledge on health systems accountability and to identify any gaps. We extracted research questions from the policymaker interviews and focus groups (70 questions) and from the overview of reviews (112 questions), and synthesized these into 36 overarching questions. Using the online platform Co-Digital, we invited researchers from around the world to refine and then rank the questions according to research importance. The questions that emerged amongst the top priorities focused on political factors that mediate the adoption or effectiveness of accountability initiatives, processes and incentives that facilitate the acceptability of accountability mechanisms among frontline healthcare providers, and the national governance reforms and contexts that enhance provider accountability. The process revealed different underlying conceptions of social accountability and how best to promote it, with some researchers and policymakers focusing on specific interventions and others embracing a more systems-oriented approach to understanding accountability, the multiple forms that it can take, how these interact with each other and the importance of power and underlying social relations. The findings from this exercise identify HPSR funding priorities and future areas for evidence production and policy engagement.
Collapse
Affiliation(s)
- K Scott
- Health Systems Program, Department of International Health, Johns Hopkins Bloomberg School of Public Health, 615 N. Wolf Street, Baltimore, MA, USA
| | - N Jessani
- Department of Health Behavior and Society, Johns Hopkins Bloomberg School of Public Health, 615 N. Wolf Street, Baltimore, MA, USA
| | - M Qiu
- Health Systems Program, Department of International Health, Johns Hopkins Bloomberg School of Public Health, 615 N. Wolf Street, Baltimore, MA, USA
| | - S Bennett
- Health Systems Program, Department of International Health, Johns Hopkins Bloomberg School of Public Health, 615 N. Wolf Street, Baltimore, MA, USA
| |
Collapse
|
218
|
Lu J, Li Q, Qiu CW, Hong Y, Ghosh P, Qiu M. Nanoscale Lamb wave-driven motors in nonliquid environments. Sci Adv 2019; 5:eaau8271. [PMID: 30873431 PMCID: PMC6408156 DOI: 10.1126/sciadv.aau8271] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 01/23/2019] [Indexed: 05/20/2023]
Abstract
Achieving light-driven motions in nonliquid environments presents formidable challenges, because microsized objects experience strong dry adhesion and intend to be stuck to contact surfaces with great tenacity. Here, in air and vacuum, we show rotary locomotion of a micrometer-sized metal plate with ~30 nm thickness, revolving around a microfiber. This motor is powered by pulsed light guided into the fiber as a coordinated consequence of an optically excited Lamb wave on the plate and favorable configuration of plate-fiber geometry. The motor, actuated by designed light pulses, crawls stepwise with subnanometer locomotion resolution. Furthermore, we can control the rotation velocity and step resolution by varying the repetition rate and pulse power, respectively. A light-actuated micromirror scanning with 0.001° resolution is then demonstrated on the basis of this motor. It offers unprecedented application potential for integrated micro-opto-electromechanical systems, outer-space all-optical precision mechanics and controls, and laser scanning for miniature lidar systems.
Collapse
Affiliation(s)
- Jinsheng Lu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qiang Li
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Cheng-Wei Qiu
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore
| | - Yu Hong
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Pintu Ghosh
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Min Qiu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
- School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou 310024, China
- Institute of Advanced Technology, Westlake Institute for Advanced Study, Westlake University, 18 Shilongshan Road, Hangzhou 310024, China
- Corresponding author. ,
| |
Collapse
|
219
|
Ding B, Zhang Z, Chen YH, Zhang Y, Blaikie RJ, Qiu M. Tunable Valley Polarized Plasmon-Exciton Polaritons in Two-Dimensional Semiconductors. ACS Nano 2019; 13:1333-1341. [PMID: 30726051 DOI: 10.1021/acsnano.8b06775] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Monolayers of transition-metal dicalcogenides have emerged as two-dimensional semiconductors with direct bandgaps at degenerate but inequivalent electronic "valleys", supporting distinct excitons that can be selectively excited by polarized light. These valley-addressable excitons, when strongly coupled with optical resonances, lead to the formation of half-light half-matter quasiparticles, known as polaritons. Here we report self-assembled plasmonic crystals that support tungsten disulfide monolayers, in which the strong coupling of semiconductor excitons and plasmon lattice modes results in a Rabi splitting of ∼160 meV in transmission spectra as well as valley-polarized photoluminescence at room temperature. More importantly we find that one can flexibly tune the degree of valley polarization by changing either the emission angle or the excitation angle of the pump beam. Our results provide a platform that allows the detection, control, and processing of optical spin and valley information at the nanoscale under ambient conditions.
Collapse
Affiliation(s)
- Boyang Ding
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Physics , University of Otago , Dunedin 9016 , New Zealand
| | - Zhepeng Zhang
- Department of Materials Science and Engineering, College of Engineering, Center for Nanochemistry (CNC), College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies , Peking University , Beijing 100871 , People's Republic of China
| | - Yu-Hui Chen
- School of Physics , Beijing Institute of Technology , Beijing 10081 , People's Republic of China
| | - Yanfeng Zhang
- Department of Materials Science and Engineering, College of Engineering, Center for Nanochemistry (CNC), College of Chemistry and Molecular Engineering, Academy for Advanced Interdisciplinary Studies , Peking University , Beijing 100871 , People's Republic of China
| | - Richard J Blaikie
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Physics , University of Otago , Dunedin 9016 , New Zealand
| | - Min Qiu
- School of Engineering , Westlake University , Hangzhou 310024 , People's Republic of China
- Institute of Advanced Technology , Westlake Institute for Advanced Study , Hangzhou 310024 , People's Republic of China
| |
Collapse
|
220
|
Maher N, Qiu M. 19. Examining discordance between histopathology diagnoses of thin melanoma compared to dysplastic naevi. Pathology 2019. [DOI: 10.1016/j.pathol.2018.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
221
|
Zha L, Shang M, Qiu M, Zhang H, Su Y. Process intensification of mixing and chemical modification for polymer solutions in microreactors based on gas-liquid two-phase flow. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2018.11.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
222
|
Eykman E, Field A, Lochhead A, Ma K, Qiu M. 49. High grade B cell lymphoma transformed from a low grade B cell lymphoma with spontaneous remission – A case report. Pathology 2019. [DOI: 10.1016/j.pathol.2018.09.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
223
|
Huang M, Chou A, Riley D, Kim Y, Lukeis R, Qiu M. 45. Case report of unusual ALK gene rearrangement and review of 354 cases of ALK rearrangement study of lung non-small cell carcinoma. Pathology 2019. [DOI: 10.1016/j.pathol.2018.09.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
224
|
Tian J, Luo H, Yang Y, Ding F, Qu Y, Zhao D, Qiu M, Bozhevolnyi SI. Active control of anapole states by structuring the phase-change alloy Ge 2Sb 2Te 5. Nat Commun 2019; 10:396. [PMID: 30674900 PMCID: PMC6344509 DOI: 10.1038/s41467-018-08057-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 12/14/2018] [Indexed: 11/09/2022] Open
Abstract
High-index dielectric nanoparticles supporting a distinct series of Mie resonances have enabled a new class of optical antennas with unprecedented functionalities. The great wealth of multipolar responses has not only brought in new physical insight but also spurred practical applications. However, how to make such a colorful resonance palette actively tunable is still elusive. Here, we demonstrate that the structured phase-change alloy Ge2Sb2Te5 (GST) can support a diverse set of multipolar Mie resonances with active tunability. By harnessing the dramatic optical contrast of GST, we realize broadband (Δλ/λ ~ 15%) mode shifting between an electric dipole resonance and an anapole state. Active control of higher-order anapoles and multimodal tuning are also investigated, which make the structured GST serve as a multispectral optical switch with high extinction contrasts (>6 dB). With all these findings, our study provides a new direction for realizing active nanophotonic devices.
Collapse
Affiliation(s)
- Jingyi Tian
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
- Department of Applied Physics, Royal Institute of Technology, KTH, 10691, Stockholm, Sweden
| | - Hao Luo
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yuanqing Yang
- SDU Nano Optics, University of Southern Denmark, Campusvej 55, DK-5230, Odense, Denmark.
| | - Fei Ding
- SDU Nano Optics, University of Southern Denmark, Campusvej 55, DK-5230, Odense, Denmark
| | - Yurui Qu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Ding Zhao
- DTU Danchip/Cen, Technical University of Denmark, Kongens Lyngby, 2800, Denmark
| | - Min Qiu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
- School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou, 310024, China.
- Institute of Advanced Technology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, China.
| | - Sergey I Bozhevolnyi
- SDU Nano Optics, University of Southern Denmark, Campusvej 55, DK-5230, Odense, Denmark
| |
Collapse
|
225
|
Xu H, Zhang M, Yan Y, Sun X, Zheng Y, Qiu M, Liu L. Extraction of neodymium from other fission products by co-reduction of Sn and Nd. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4802] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hengbin Xu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering; Harbin Engineering University; Harbin 150001 China
| | - Milin Zhang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering; Harbin Engineering University; Harbin 150001 China
- College of Science; Heihe University; Heihe 164300 China
| | - Yongde Yan
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering; Harbin Engineering University; Harbin 150001 China
| | - Xin Sun
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering; Harbin Engineering University; Harbin 150001 China
| | - Yanghai Zheng
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering; Harbin Engineering University; Harbin 150001 China
| | - Min Qiu
- College of Science; Heihe University; Heihe 164300 China
| | - Li Liu
- College of Science; Heihe University; Heihe 164300 China
| |
Collapse
|
226
|
Zhang W, Liu H, Lu J, Ni L, Liu H, Li Q, Qiu M, Xu B, Lee T, Zhao Z, Wang X, Wang M, Wang T, Offenhäusser A, Mayer D, Hwang WT, Xiang D. Atomic switches of metallic point contacts by plasmonic heating. Light Sci Appl 2019; 8:34. [PMID: 30937165 PMCID: PMC6437168 DOI: 10.1038/s41377-019-0144-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/01/2019] [Accepted: 03/03/2019] [Indexed: 05/14/2023]
Abstract
Electronic switches with nanoscale dimensions satisfy an urgent demand for further device miniaturization. A recent heavily investigated approach for nanoswitches is the use of molecular junctions that employ photochromic molecules that toggle between two distinct isoforms. In contrast to the reports on this approach, we demonstrate that the conductance switch behavior can be realized with only a bare metallic contact without any molecules under light illumination. We demonstrate that the conductance of bare metallic quantum contacts can be reversibly switched over eight orders of magnitude, which substantially exceeds the performance of molecular switches. After the switch process, the gap size between two electrodes can be precisely adjusted with subangstrom accuracy by controlling the light intensity or polarization. Supported by simulations, we reveal a more general and straightforward mechanism for nanoswitching behavior, i.e., atomic switches can be realized by the expansion of nanoelectrodes due to plasmonic heating.
Collapse
Affiliation(s)
- Weiqiang Zhang
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Key Laboratory of Optical Information Science and Technology, Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, 300350 Tianjin, China
| | - Hongshuang Liu
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Key Laboratory of Optical Information Science and Technology, Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, 300350 Tianjin, China
| | - Jinsheng Lu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, 310027 Hangzhou, China
| | - Lifa Ni
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Key Laboratory of Optical Information Science and Technology, Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, 300350 Tianjin, China
| | - Haitao Liu
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Key Laboratory of Optical Information Science and Technology, Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, 300350 Tianjin, China
| | - Qiang Li
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, 310027 Hangzhou, China
| | - Min Qiu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, 310027 Hangzhou, China
| | - Bingqian Xu
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Key Laboratory of Optical Information Science and Technology, Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, 300350 Tianjin, China
- College of Engineering, University of Georgia, Athens, GA 30602 USA
| | - Takhee Lee
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826 Korea
| | - Zhikai Zhao
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Key Laboratory of Optical Information Science and Technology, Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, 300350 Tianjin, China
| | - Xianghui Wang
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Key Laboratory of Optical Information Science and Technology, Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, 300350 Tianjin, China
| | - Maoning Wang
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Key Laboratory of Optical Information Science and Technology, Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, 300350 Tianjin, China
| | - Tao Wang
- Institute of Materials Research and Engineering, A*STAR, 2 Fusionopolis Way, Innovis, Singapore, 138634 Singapore
| | - Andreas Offenhäusser
- Institute of Complex Systems, ICS-8, Bioelectronics, Research Center Juelich and JARA Fundamentals of Future Information Technology, Jülich, 52425 Germany
| | - Dirk Mayer
- Institute of Complex Systems, ICS-8, Bioelectronics, Research Center Juelich and JARA Fundamentals of Future Information Technology, Jülich, 52425 Germany
| | - Wang-Taek Hwang
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826 Korea
| | - Dong Xiang
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Key Laboratory of Optical Information Science and Technology, Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, 300350 Tianjin, China
| |
Collapse
|
227
|
Qiu M, Zha L, Song Y, Xiang L, Su Y. Numbering-up of capillary microreactors for homogeneous processes and its application in free radical polymerization. REACT CHEM ENG 2019. [DOI: 10.1039/c8re00224j] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Different numbered-up capillary microreactor systems were assembled with commercially available parts for homogeneous processes with significant variation of fluid properties (e.g., free radical polymerization), and statistical analysis was performed to reveal its flow distribution performance.
Collapse
Affiliation(s)
- Min Qiu
- Department of Chemical Engineering
- Shanghai Electrochemical Energy Devices Research Center
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Li Zha
- Department of Chemical Engineering
- Shanghai Electrochemical Energy Devices Research Center
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Yang Song
- Department of Chemical Engineering
- Shanghai Electrochemical Energy Devices Research Center
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Liang Xiang
- Department of Chemical Engineering
- Shanghai Electrochemical Energy Devices Research Center
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
| | - Yuanhai Su
- Department of Chemical Engineering
- Shanghai Electrochemical Energy Devices Research Center
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
| |
Collapse
|
228
|
Yu C, Qiu M, Jiang X, Zhang Z, Du H, Li Q, Xia B, Song X, Hu C, Xiong X, Yang L, Peng H, Chen J, Wang Y, Yang C. Genetic Diversity and Phyletic Evolution of Eleven Chinese Indigenous and Three Commercial Chicken Breeds by mtDNA Sequences. Braz J Poult Sci 2019. [DOI: 10.1590/1806-9061-2018-0807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- C Yu
- Sichuan Animal Science Academy, China
| | - M Qiu
- Sichuan Animal Science Academy, China
| | - X Jiang
- Sichuan Animal Science Academy, China
| | - Z Zhang
- Sichuan Animal Science Academy, China
| | - H Du
- Sichuan Animal Science Academy, China
| | - Q Li
- Sichuan Animal Science Academy, China
| | - B Xia
- Sichuan Animal Science Academy, China
| | - X Song
- Sichuan Animal Science Academy, China
| | - C Hu
- Sichuan Animal Science Academy, China
| | - X Xiong
- Sichuan Animal Science Academy, China
| | - L Yang
- Sichuan Animal Science Academy, China
| | - H Peng
- Sichuan Animal Science Academy, China
| | - J Chen
- Sichuan Animal Science Academy, China
| | - Y Wang
- Sichuan Agricultural University, China
| | - C Yang
- Sichuan Animal Science Academy, China
| |
Collapse
|
229
|
Shen X, Wang Y, Cui C, Zhao X, Li D, Zhu Q, Jiang X, Yang C, Qiu M, Yu C, Li Q, Du H, Zhang Z, Yin H. Detection of Snps in the Melanocortin 1-Receptor (MC1R) and Its Association with Shank Color Trait in Hs Chicken. Braz J Poult Sci 2019. [DOI: 10.1590/1806-9061-2018-0845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- X Shen
- Sichuan Agricultural University, China
| | - Y Wang
- Sichuan Agricultural University, China
| | - C Cui
- Sichuan Agricultural University, China
| | - X Zhao
- Sichuan Agricultural University, China
| | - D Li
- Sichuan Agricultural University, China
| | - Q Zhu
- Sichuan Agricultural University, China
| | - X Jiang
- Sichuan Animal Science Academy, China
| | - C Yang
- Sichuan Animal Science Academy, China
| | - M Qiu
- Sichuan Animal Science Academy, China
| | - C Yu
- Sichuan Animal Science Academy, China
| | - Q Li
- Sichuan Animal Science Academy, China
| | - H Du
- Sichuan Animal Science Academy, China
| | - Z Zhang
- Sichuan Animal Science Academy, China
| | - H Yin
- Sichuan Agricultural University, China
| |
Collapse
|
230
|
Yang Y, Chen J, Liu X, Qiu M, Liu L, Gao F. Oxygen vacancy-mediated WO 3 nanosheets by etched {200} facets and the efficient visible-light photocatalytic oxygen evolution. NEW J CHEM 2019. [DOI: 10.1039/c9nj04286e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The abundant oxygen vacancies in WO3 nanosheets result in the significant improvement of the photocatalytic O2 evolution.
Collapse
Affiliation(s)
- Yurong Yang
- College of Science
- Heihe University
- Heihe
- P. R. China
- Key Laboratory of Superlight Materials and Surface Technology
| | - Jiaming Chen
- College of Science
- Heihe University
- Heihe
- P. R. China
| | - Xuelian Liu
- College of Science
- Heihe University
- Heihe
- P. R. China
| | - Min Qiu
- College of Science
- Heihe University
- Heihe
- P. R. China
| | - Li Liu
- College of Science
- Heihe University
- Heihe
- P. R. China
| | - Fan Gao
- College of Science
- Heihe University
- Heihe
- P. R. China
| |
Collapse
|
231
|
Tian XJ, Qiu M, Liu Z, Xiao RT, Huang Y, Wang GL, Hou XF, Zhang SD, Zhuang SR, Ma LL. [Single-center study of laparoscopic radical nephrectomy with Mayo 0-2 level inferior vena cava thrombectomy]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:1053-1056. [PMID: 30562781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
OBJECTIVE To investigate the safety and feasibility of laparoscopic treatment for renal carcinoma with Mayo 0-2 level venous thrombosis. METHODS From January 2015 to February 2018, 58 renal carcinoma cases with venous thrombus underwent laparoscopic radical nephrectomy with inferior vena cava thrombectomy in Department of Urology, Peking University Third Hospital, of which, 51 cases were male, and 7 female, aged 29-82 years. According to the Mayo grade classification, 20 cases were level 0, 20 cases were level 1, and 18 cases were level 2, with left side being 22 cases, and right side 36 cases. The patients except for those complicated with hemorrhagic diseases, cardiac and pulmonary insufficiency, or those who could not tolerate anesthesia and surgical contraindications, underwent the operation after comprehensive examinations. RESULTS The 58 cases of renal tumor with venous tumor emboli were successfully completed with the surgeries, including 50 cases of totally laparoscopic surgery, 8 cases of laparoscopy surgery from convert to open (among the patients who were converted to open surgery, 7 were complicated with grade 2 tumor thrombus and 1 with grade 1 tumor thrombus). The main reasons for converting to open surgery were huge tumors (the largest of which was about 16 cm in diameter), severe adhesion and difficulty of separation. For different patients, different surgical methods and procedures were adopted according to the tumor direction and the different grade of tumor thrombus. Radical nephrectomy combined with vena cava tumor thrombus removal was performed in 55 cases and segmental resection of vena cava in 3 cases. The operation time was 132-557 min, and blood loss was 20-3 000 mL. Post-operative pathological types: 51 cases were clear cell carcinoma, 5 cases were type 2 of papillary carcinoma, 1 case was squamous cell carcinoma, and 1 case was chromophobe cell tumor. In the study, 47 cases were followed up for 1-36 months, and 4 cases died (the survival time was 5-15 months, with an average of 10.2 months). CONCLUSION Laparoscopic radical nephrectomy with inferior vena cava thrombectomy is a reasonable choice for renal tumor with Mayo 0-2 level venous thrombosis. For different tumor directions and different grades of tumor thrombus, an appropriate operation plan can give the maxim benefit to the patients with skillful surgeons.
Collapse
Affiliation(s)
- X J Tian
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - M Qiu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Z Liu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - R T Xiao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Y Huang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - G L Wang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - X F Hou
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - S D Zhang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - S R Zhuang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - L L Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
232
|
Zhu H, Luo H, Li Q, Zhao D, Cai L, Du K, Xu Z, Ghosh P, Qiu M. Tunable narrowband mid-infrared thermal emitter with a bilayer cavity enhanced Tamm plasmon. Opt Lett 2018; 43:5230-5233. [PMID: 30382974 DOI: 10.1364/ol.43.005230] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 09/20/2018] [Indexed: 06/08/2023]
Abstract
A narrowband thermal emitter exhibits higher energy efficiency and sensitivity in molecule sensing and other mid-infrared (MIR) spectral range applications compared to a blackbody emitter. Most narrowband thermal emitters involving surface plasmons have a relatively low quality factor (Q-factor) and require complex fabrication processes. Here we propose a bilayer cavity-enhanced Tamm plasmon (TP) structure with a high/low refractive index bilayer sandwiched between a metal and distributed Bragg reflector (DBR) to achieve an enhanced Q-factor and maintain higher emittance over a conventional pure DBR-metal TP structure-based emitters. The large optical thickness of the high/low index bilayer cavity aids in increasing the Q-factor (∼172 for emission) of the cavity resonance. Furthermore, a tunable Q-factor is achieved (Q from 172 to 47 for emission) by incorporating phase-changing material Ge2Sb2Te5. This easy-to-fabricate and tunable high Q-factor emitter is competent as a narrowband MIR light source in molecule sensing, typically gas sensing applications.
Collapse
|
233
|
Ding ZS, Qiu M, Xu ZC, Xiao RT, Ge LY, Ma LL. [Clinicopathological analysis of patients with papillary renal cell carcinoma]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:805-810. [PMID: 30337739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To investigate the clinicopathological features,treatment and prognosis of patients with papillary renal cell carcinoma (PRCC) and PRCC-complicated with tumor thrombus. METHODS Single center retrospective analysis of 75 patients with PRCC treated from January 2012 to October 2017 was performed. There were 55 males and 20 females at an age range of 24-82 years. Sixteen PRCC patients were complicated with tumor thrombus. All the patients were with a surgery and had clear pathological diagnosis and detailed follow-up data. The clinicopathological features, prognosis and influencing factors of the patients with PRCC and PRCC complicated with tumor thrombus were analyzed and summarized. RESULTS The average age of the 75 patients was(56.05±11.59)years,the average body mass index (BMI) was (26±3) kg/m², and the average tumor maximum diameter was (5.17±3.85) cm. There were significant differences between tumor maximum diameter larger than 7 cm and less than 7 cm (69.6% vs. 94.4%, P<0.001), lymph node metastasis and no lymph node metastasis (<38% vs. 98%, P<0.001), adrenal metastasis and no adrenal metastasis (0% vs. 95.3%, P<0.001), pulmonary metastasis and no pulmonary metastasis (0% vs.90.7%, P<0.001), complicated with and without tumor thrombus (<66.4% vs. 93.5%, P<0.001) on the effect of 3-year survival rate of the PRCC patients. In this study, there were 16 patients with type 2 PRCC complicated with tumor thrombus. There were significant differences in concomitant symptoms (62.5% vs. 22.0%, P=0.005), maximum tumor diameter (68.8% vs.13.3%, P<0.001), adrenal metastasis (18.8% vs. 0.02%, P=0.029), pulmonary metastasis (18.8% vs. 0%, P=0.008), nuclear grade (P<0.001) and pathological type (100% vs. 44.1%, P<0.001) between the PRCC patients with and without tumor thrombus. CONCLUSION There were significant differences in tumor diameter,lymph node metastasis,adrenal metastasis, pulmonary metastasis,pathological type, nuclear grade and tumor thrombus in the effect of the 3-year survival rate of PRCC patients. PRCC patients with tumor thrombus were more commonly suffered from type 2 PRCC, for whom the tumor diameter was larger,the nuclear grade was higher,and the distance metastasis happened more easily.
Collapse
Affiliation(s)
- Z S Ding
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - M Qiu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Z C Xu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - R T Xiao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - L Y Ge
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - L L Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
234
|
Li Q, Chen Z, Zhang X, Peng Y, Ghosh P, Yao G, Luo H, Lv J, Qiu M. Au 80Sn 20-based targeted noncontact nanosoldering with low power consumption. Opt Lett 2018; 43:4989-4992. [PMID: 30320801 DOI: 10.1364/ol.43.004989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 09/16/2018] [Indexed: 06/08/2023]
Abstract
Energy-efficient nanosoldering technology for realizing connections at the nanoscale is a long-sought-after goal for constructing advanced optoelectronic nanodevices. However, the ability to achieve noncontact handling, low power consumption, and targeted nanosoldering remains a challenge. In this work, we demonstrate a method of targeted photothermal-induced nanosoldering of silver nanowires, which uses Au80Sn20 alloy nanowires as the nanosolder and a 532 nm continuous wave laser as the heat source. The required power for fusing the Au80Sn20 solder is reduced by a factor of 55 compared to the previously demonstrated Ag self-nanosolder case. Construction of a few typical nanostructures (including "X"-, "Y"-, and "-"-shaped junctions) is achieved with this method. Besides its low power consumption, it also provides advantages including noncontact and targeted soldering, thereby introducing new avenues for fabricating complex nanostructures and advanced functional nanodevices.
Collapse
|
235
|
Tian J, Laurell F, Pasiskevicius V, Qiu M, Jang H. Demonstration of terahertz ferroelectric metasurface using a simple and scalable fabrication method. Opt Express 2018; 26:27917-27930. [PMID: 30469849 DOI: 10.1364/oe.26.027917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 09/30/2018] [Indexed: 06/09/2023]
Abstract
We report on experimental implementation of a ferroelectric metasurface using an x-cut KTiOPO4 (KTP) crystal for efficient manipulation of terahertz (THz) radiation. Based on the multipolar resonances that are accommodated in KTP micro-blocks in a square array, the metasurface is fabricated by precision diamond-blade dicing. Adjusting the size of the KTP micro-blocks to tailor the relative spectral positions of the anisotropic multipolar resonances, we demonstrate a subwavelength-thin THz polarizer that functions as a transparent film in the y-direction and a magnetic mirror in the z-direction with a transmission contrast of 13 dB near 0.37 THz (820 µm). The ferroelectric-based all-dielectric metasurface will provide a versatile platform to engineer the THz waves in the far field and could potentially be combined with THz generation in the same material.
Collapse
|
236
|
Gu X, Qiu M, Sun H, Zhang J, Cheng L, Deng C, Zhong Z. Polytyrosine nanoparticles enable ultra-high loading of doxorubicin and rapid enzyme-responsive drug release. Biomater Sci 2018; 6:1526-1534. [PMID: 29666858 DOI: 10.1039/c8bm00243f] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Despite the great significance of clinically viable nanovehicles, very few of them exhibit stability and high anticancer drug loading with fast intracellular drug release. Herein, we report that polytyrosine nanoparticles (PTNs) self-assembled from poly(ethylene glycol)-b-poly(l-tyrosine) block copolymer enable the ultra-high loading and rapid enzyme-responsive release of doxorubicin (DOX). Notably, PTNs achieve a remarkably high DOX loading of 63.1 wt% likely due to the existence of strong π-π stacking between polytyrosine and DOX, as shown by UV-vis analysis. Additionally, PTNs present a high docetaxel loading of 17.5 wt%. Furthermore, PTNs exhibit good colloidal stability in 10% FBS, but are quickly de-stabilized by proteinase K. Interestingly, ca. 90% of DOX is released under 6 U mL-1 proteinase K in 24 h or in RAW 264.7 cells in 8 h. The DOX-loaded PTNs display efficient delivery and release of DOX in both RAW 264.7 cells and HCT-116 human colorectal cancer cells, achieving a better in vitro antiproliferative effect than the clinically used liposomal DOX formulation. Thus, these polytyrosine nanoparticles appear to be a potentially viable platform for the controlled delivery of anthraquinone anticancer agents.
Collapse
Affiliation(s)
- Xiaolei Gu
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | | | | | | | | | | | | |
Collapse
|
237
|
Qiu M, Chen Y, Zhang BL, Wang XY. Peripherally inserted central venous catheters did not increase the risk of deep venous thrombosis in advanced colorectal cancer and lung cancer patients with bevacizumab. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy277.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
238
|
Qiu M, Wang X, Sun H, Zhang J, Deng C, Zhong Z. Cyclic RGD-Peptide-Functionalized Polylipopeptide Micelles for Enhanced Loading and Targeted Delivery of Monomethyl Auristatin E. Mol Pharm 2018; 15:4854-4861. [PMID: 30259747 DOI: 10.1021/acs.molpharmaceut.8b00498] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Monomethyl auristatin E (MMAE) is an extremely potent peptide drug that is currently used in the form of antibody drug conjugates (ADCs) for treating different cancers. ADCs are, however, associated with low drug conjugation, immunogenicity, small scale production, and high costs. Here, cRGD-functionalized polylipopeptide micelles (cRGD-Lipep-Ms) were explored for enhanced loading and targeted delivery of MMAE to HCT-116 colorectal tumor xenografts. Interestingly, cRGD-Lipep-Ms achieved an MMAE loading content of 5.5 wt %, which was 55-fold higher than that of poly(ethylene glycol)- b-poly(d,l-lactide) micelles. MMAE-loaded cRGD-Lipep-Ms (MMAE-cRGD-Lipep-Ms) showed a small hydrodynamic size of 59 nm, minimal drug leakage in 10% FBS, and efficient uptake and superb antiproliferative activity in αvβ5-overexpressing HCT-116 tumor cells. Remarkably, MMAE-cRGD-Lipep-Ms displayed over 10-fold better toleration than free MMAE in mice and completely suppressed growth of HCT-116 colorectal tumor xenografts. These polylipopeptide micelles have appeared to be an attractive alternative to ADCs for targeted delivery of potent peptide drugs.
Collapse
Affiliation(s)
- Min Qiu
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , People's Republic of China
| | - Xiuxiu Wang
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , People's Republic of China
| | - Huanli Sun
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , People's Republic of China
| | - Jian Zhang
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , People's Republic of China
| | - Chao Deng
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , People's Republic of China
| | - Zhiyuan Zhong
- Biomedical Polymers Laboratory and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , People's Republic of China
| |
Collapse
|
239
|
Tian J, Li Q, Lu J, Qiu M. Reconfigurable all-dielectric antenna-based metasurface driven by multipolar resonances. Opt Express 2018; 26:23918-23925. [PMID: 30184886 DOI: 10.1364/oe.26.023918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 08/24/2018] [Indexed: 06/08/2023]
Abstract
Dielectric nanoantenna-based metasurfaces have attracted wide attention for their outstanding performance in light manipulation with low loss and full phase coverage enabled by multipolar resonances. To make the metasurfaces actively tunable, we adopt a kind of phase-changing material Ge2Sb2Te5 to construct non-volatile, switchable antenna-based metasurfaces in the mid-infrared spectrum region. Our design of the metasurface can realize switching between electric and magnetic dipole resonances across a broad spectrum region through crystalline-amorphous phase transitions under fixed design. Moreover, the transmission switching contrast between different phases can be up to 30dB (-30dB), due to the shift of multipolar resonances. This reconfigurable antenna-based metasurface will pave the way for ultimate design of light modulators, deflectors, holograms and so on for future optical communication networks.
Collapse
|
240
|
Tang XG, Yan Y, Qiu M, Lu J, Lu M, Hou XF, Huang Y, Ma LL. [Retrospective study of young bladder urothelial carcinoma from a single center within 16 years]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:630-633. [PMID: 30122762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To evaluate the clinical and pathological features, treatment and prognosis for bladder urothelial carcinoma in relative young patients under 40 years. METHODS A retrospective study involved a total of 43 consecutive patients of bladder urothelial carcinoma, which were under 40 years old from January 2001 to December 2016. RESULTS The incidence rate of bladder urothelial carcinoma in the patients under 40 years was 2.2%, and 35 males and 8 females were included. The average age was 33 years (ranging from 23 to 40 years). At initial visit, 62.8% of the patients presented with painless gross hematuria, 9 patients were discovered by routine examination, and 7 patients experienced lower urinary tract symptoms. Solitary tumor occurred in 34 cases whereas multiple carcinomas had been discovered in 9 cases,and all the 9 multiple cases were from 31-40-year-old subgroups. All the patients received proper surgical intervention according to their own clinical stages. Post-operative pathological results showed 29 low-grade urothelial carcinoma and 14 high-grade cases which included 31 Ta cases, with 7 cases of T1, 1 case of T3, and 3 cases of T4 and one case of T1 plus Tis. The total follow-up was from 5 to 165 months, 3 cases were lost. The overall recurrence rate was 12.5% (5 cases from 40). One patient developed distal metastasis, one died of metastasis after 13 months, and the other three received secondary trans-urethral resection of bladder tumors. The average recurrence time was 39 months (ranging from 3 to 105 months). The progression rate was 5% among all the followed-up patients (2 cases from 40). The recurrence rate in multiple lesions group (33%, 3/9) was significantly higher than that (5.9%, 2/34) in solitary lesion group (P=0.000 3). CONCLUSION The incidence rate of bladder urothelial carcinoma in young patients under 40 years becomes increasingly higher over years. The major initial presentation is painless gross hematuria among these young patients, but lower urinary tract symptoms should also be noticed for young patients to rule out tumor. Postoperative tumor recurrence might be associated with multiple lesions, which is not related to the tumor size or pathological features.
Collapse
Affiliation(s)
- X G Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Y Yan
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - M Qiu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - J Lu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - M Lu
- Department of Pathology, Peking University Third Hospital, Beijing 100191, China
| | - X F Hou
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Y Huang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - L L Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
241
|
Abstract
Three-dimensional (3D) nanofabrication techniques are of paramount importance in nanoscience and nanotechnology because they are prerequisites to realizing complex, compact, and functional 3D nanodevices. Although several 3D nanofabrication methods have been proposed and developed in recent years, it is still a formidable challenge to achieve a balance among resolution, accuracy, simplicity, and adaptability. Here, we propose a 3D nanofabrication method based on electron-beam lithography using ice resists (iEBL) and fabricate 3D nanostructures by stacking layered structures and those with dose-modulated exposure, respectively. The entire process of 3D nanofabrication is realized in one vacuum system by skipping the spin-coating and developing steps required for commonly used resists. This needs far fewer processing steps and is contamination-free compared with conventional methods. With in situ alignment and correction in the iEBL process, a pattern resolution of 20 nm and an alignment error below 100 nm can be steadily achieved. This 3D nanofabrication technique using ice thus shows great potential in the fabrication of complicated 3D nanodevices.
Collapse
Affiliation(s)
- Yu Hong
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering , Zhejiang University , Hangzhou 310027 , PR China
| | - Ding Zhao
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering , Zhejiang University , Hangzhou 310027 , PR China
| | - Dongli Liu
- Institute of Advanced Technology, Westlake Institute for Advanced Study , Westlake University , Hangzhou 310024 , PR China
| | - Binze Ma
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering , Zhejiang University , Hangzhou 310027 , PR China
| | - Guangnan Yao
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering , Zhejiang University , Hangzhou 310027 , PR China
| | - Qiang Li
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering , Zhejiang University , Hangzhou 310027 , PR China
| | - Anpan Han
- DTU Danchip/Cen , Technical University of Denmark , Kongens Lyngby 2800 , Denmark
| | - Min Qiu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering , Zhejiang University , Hangzhou 310027 , PR China
- Institute of Advanced Technology, Westlake Institute for Advanced Study , Westlake University , Hangzhou 310024 , PR China
| |
Collapse
|
242
|
Chen Y, Liu Y, Qiu J, Wu D, Qiu M, Xie W, Tan Q. Co-expression of protease and pectinase in Bacillus subtilis using the herbal saponin extract as substrate. Int Microbiol 2018; 21:223-229. [PMID: 30810900 DOI: 10.1007/s10123-018-0019-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 07/03/2018] [Accepted: 07/06/2018] [Indexed: 11/26/2022]
Abstract
This study armed to determine the expression of protease and pectinase in Bacillus subtilis using the herbal saponin extract as the fermentation substrates and then characterize the fermentation broths. The saponin concentration in the crude extract from four herbs reached to 25% under the extraction conditions of 60 °C, with a pH 9 for 3 h at a solid-liquid ratio of 1:18. In direct fermentation of Bacillus subtilis in the saponin extract, the maximum activities of protease and pectinase in the cell supernatant reached 3984 and 227 U/ml, respectively. Correspondingly, when 5% glucose was added to this extract for the fermentation, the two maximum activities were up to 2451 and 1390 U/ml, respectively. When characterization of the two abovementioned fermentation broths was carried out, it was observed that the luminousness values were increased to 26.9 and 39.2% from 9.7% of the initial value after 32 h of fermentation, respectively, and there was no significant change in the saponin concentration during the fermentation processes. The evaluation values of washing performance were remarkably improved by 8.2 and 21.7%, respectively.
Collapse
Affiliation(s)
- Yuquan Chen
- Institute of Pharmacy, Guangxi University of Chinese Medicine, Nanning, 530001, Guangxi, People's Republic of China
| | - Yuting Liu
- Institute of Pharmacy, Guangxi University of Chinese Medicine, Nanning, 530001, Guangxi, People's Republic of China
| | - Jie Qiu
- Institute of Pharmacy, Guangxi University of Chinese Medicine, Nanning, 530001, Guangxi, People's Republic of China
| | - Dongmei Wu
- Institute of Pharmacy, Guangxi University of Chinese Medicine, Nanning, 530001, Guangxi, People's Republic of China
| | - Min Qiu
- Institute of Pharmacy, Guangxi University of Chinese Medicine, Nanning, 530001, Guangxi, People's Republic of China
| | - Wenpei Xie
- Institute of Pharmacy, Guangxi University of Chinese Medicine, Nanning, 530001, Guangxi, People's Republic of China
| | - Qiang Tan
- Institute of Pharmacy, Guangxi University of Chinese Medicine, Nanning, 530001, Guangxi, People's Republic of China.
| |
Collapse
|
243
|
Pan M, Li Q, Hong Y, Cai L, Lu J, Qiu M. Circular-polarization-sensitive absorption in refractory metamaterials composed of molybdenum zigzag arrays. Opt Express 2018; 26:17772-17780. [PMID: 30114062 DOI: 10.1364/oe.26.017772] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 06/21/2018] [Indexed: 06/08/2023]
Abstract
Circularly polarized light (CPL) is utilized in various fields, including optical communication and biological imaging. To overcome the lack of circular-polarization-sensitive absorbers working at high temperature, a refractory and circular-polarization-sensitive absorber comprised of molybdenum zigzag arrays is proposed. At certain resonant wavelengths, one component of circular polarization is absorbed by confining electromagnetic field in the dielectric layer, while the other component is backscattered. The circular-polarization-sensitive absorber could be applied as a CPL thermal radiator as well as a reflective linear-to-circular polarizer. As a CPL thermal radiator, left-handed circular radiation and right-handed circular radiation are dominant at different temperatures, respectively. As a linear-to-circular polarizer, both perfect left-handed circularly polarized light and nearly perfect right-handed circularly polarized light are obtained.
Collapse
|
244
|
Qu Y, Li Q, Cai L, Pan M, Ghosh P, Du K, Qiu M. Thermal camouflage based on the phase-changing material GST. Light Sci Appl 2018; 7:26. [PMID: 30839556 PMCID: PMC6107009 DOI: 10.1038/s41377-018-0038-5] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 05/18/2018] [Accepted: 05/21/2018] [Indexed: 05/14/2023]
Abstract
Camouflage technology has attracted growing interest for many thermal applications. Previous experimental demonstrations of thermal camouflage technology have not adequately explored the ability to continuously camouflage objects either at varying background temperatures or for wide observation angles. In this study, a thermal camouflage device incorporating the phase-changing material Ge2Sb2Te5 (GST) is experimentally demonstrated. It has been shown that near-perfect thermal camouflage can be continuously achieved for background temperatures ranging from 30 °C to 50 °C by tuning the emissivity of the device, which is attained by controlling the GST phase change. The thermal camouflage is robust when the observation angle is changed from 0° to 60°. This demonstration paves the way toward dynamic thermal emission control both within the scientific field and for practical applications in thermal information.
Collapse
Affiliation(s)
- Yurui Qu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027 China
| | - Qiang Li
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027 China
| | - Lu Cai
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027 China
| | - Meiyan Pan
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027 China
| | - Pintu Ghosh
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027 China
| | - Kaikai Du
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027 China
| | - Min Qiu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027 China
| |
Collapse
|
245
|
Yang Y, Ye K, Cao D, Gao P, Qiu M, Liu L, Yang P. Efficient Charge Separation from F - Selective Etching and Doping of Anatase-TiO 2{001} for Enhanced Photocatalytic Hydrogen Production. ACS Appl Mater Interfaces 2018; 10:19633-19638. [PMID: 29806461 DOI: 10.1021/acsami.8b02804] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
TiO2 nanomaterials with coexposed {001} and {101} facets have aroused much interest owing to their outstanding photocatalytic performance. In this study, on the basis of its unique characteristics of photoinduced electron and hole transfer to different lattice planes, we synthesized F- selective etching and doping on {001} facets of anatase TiO2 nanosheets using TiO2 nanosheets with coexposed {001} and {101} facets as a precursor. Through a series of measurements, such as photoluminescence, transient photocurrent response, electrochemical impedance spectra, and Mott-Schottky measurements, it is proved that F- selective etching and doping on {001} facets of TiO2 can extremely accelerate the separation of photogenerated carriers by shortening the transfer pathway of holes and introducing Ti3+ and oxygen vacancies in {001} facets. Therefore, the as-obtained sample shows excellent photocatalytic properties under the visible-light irradiation; the highest rate of photocatalytic H2 evolution is up to 18270 μ mol h-1 g-1 and its quantum efficiency is up to 21.6% at λ = 420 nm. As an innovative exploration, this study provides a direct spatial charge separation strategy for developing highly efficient photocatalysts.
Collapse
Affiliation(s)
- Yurong Yang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , Heilongjiang 150001 P. R. China
- College of Science , Heihe University , Heihe , Heilongjiang 164300 , P. R. China
| | - Ke Ye
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , Heilongjiang 150001 P. R. China
| | - Dianxue Cao
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , Heilongjiang 150001 P. R. China
| | - Peng Gao
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , Heilongjiang 150001 P. R. China
- College of Materials Science and Chemical Engineering , Hangzhou Normal University , Hangzhou , Zhejiang 310026 P. R. China
| | - Min Qiu
- College of Science , Heihe University , Heihe , Heilongjiang 164300 , P. R. China
| | - Li Liu
- College of Science , Heihe University , Heihe , Heilongjiang 164300 , P. R. China
| | - Piaoping Yang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , Heilongjiang 150001 P. R. China
| |
Collapse
|
246
|
Ghosh P, Lu J, Luo H, Xu Z, Yan X, Wang Y, Lu J, Qiu M, Li Q. Fabrication of controllably variable sub-100 nm gaps in silver nanowires by photothermal-induced stress. Opt Lett 2018; 43:2422-2425. [PMID: 29762608 DOI: 10.1364/ol.43.002422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 03/24/2018] [Indexed: 06/08/2023]
Abstract
A technique to fabricate nanogaps with controllably variable gap width in silver (Ag) nanowires (NWs) by photothermal-induced stress utilizing a focused continuous-wave laser (532 nm) is presented. For the case of an Ag NW on gold thin film, a gap width starting from ∼20 nm is achieved with a critical minimum power (CMP) of about 160 mW, whereas in the case of an Ag NW placed on top of a zinc oxide NW, the attained gap width is as small as a few nm (<10 nm) with a CMP of only ∼100 mW. In both cases, the CMP is much lower as compared to the required CMP (∼280 mW) for an Ag NW placed on a bare silica substrate. The photothermal-induced stress combined with Rayleigh instability, melting, and sublimation of Ag aids in breaking the Ag NW. In particular, the former one plays a key role in attaining an extremely narrow gap. This technique to fabricate sub-100 nm nanogaps in metal NWs can be extensively implemented in fabrication and maintenance of nanomechanical, nanoplasmonic, and nanoelectronic devices.
Collapse
|
247
|
Du K, Cai L, Luo H, Lu Y, Tian J, Qu Y, Ghosh P, Lyu Y, Cheng Z, Qiu M, Li Q. Wavelength-tunable mid-infrared thermal emitters with a non-volatile phase changing material. Nanoscale 2018; 10:4415-4420. [PMID: 29451573 DOI: 10.1039/c7nr09672k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The ability to continuously tune the emission wavelength of mid-infrared thermal emitters while maintaining high peak emissivity remains a challenge. By incorporating the nonvolatile phase changing material Ge2Sb2Te5 (GST), two different kinds of wavelength-tunable mid-infrared thermal emitters based on simple layered structures (GST-Al bilayer and Cr-GST-Au trilayer) are demonstrated. Aiming at high peak emissivity at a tunable wavelength, an Al film and an ultrathin (∼5 nm) top Cr film are adopted for these two structures, respectively. The gradual phase transition of GST provides a tunable peak wavelength between 7 μm and 13 μm while high peak emissivity (>0.75 and >0.63 for the GST-Al and Cr-GST-Au emitters, respectively) is maintained. This study shows the capability of controlling the thermal emission wavelength, the application of which may be extended to gas sensors, infrared imaging, solar thermophotovoltaics, and radiative coolers.
Collapse
Affiliation(s)
- Kaikai Du
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, 310027, Hangzhou, China.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
248
|
Gong W, Xiao Y, Wei Z, Yuan Y, Qiu M, Sun C, Zeng X, Liang X, Feng M, Chen Q. Toward the use of precision medicine for the treatment of head and neck squamous cell carcinoma. Oncotarget 2018; 8:2141-2152. [PMID: 27924064 PMCID: PMC5356787 DOI: 10.18632/oncotarget.13798] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 11/21/2016] [Indexed: 02/05/2023] Open
Abstract
Precision medicine is a new strategy that aims at preventing and treating human diseases by focusing on individual variations in people's genes, environment and lifestyle. Precision medicine has been used for cancer diagnosis and treatment and shows evident clinical efficacy. Rapid developments in molecular biology, genetics and sequencing technologies, as well as computational technology, has enabled the establishment of "big data", such as the Human Genome Project, which provides a basis for precision medicine. Head and neck squamous cell carcinoma (HNSCC) is an aggressive cancer with a high incidence rate and low survival rate. Current therapies are often aggressive and carry considerable side effects. Much research now indicates that precision medicine can be used for HNSCC and may achieve improved results. From this perspective, we present an overview of the current status, potential strategies, and challenges of precision medicine in HNSCC. We focus on targeted therapy based on cell the surface signaling receptors epidermal growth factor receptor (EGFR), vascular endothelial growth factor (VEGF) and human epidermal growth factor receptor-2 (HER2), and on the PI3K/AKT/mTOR, JAK/STAT3 and RAS/RAF/MEK/ERK cellular signaling pathways. Gene therapy for the treatment of HNSCC is also discussed.
Collapse
Affiliation(s)
- Wang Gong
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Yandi Xiao
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Zihao Wei
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Yao Yuan
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Min Qiu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Chongkui Sun
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Xin Zeng
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Xinhua Liang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Mingye Feng
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| |
Collapse
|
249
|
Qu Y, Cai L, Luo H, Lu J, Qiu M, Li Q. Tunable dual-band thermal emitter consisting of single-sized phase-changing GST nanodisks. Opt Express 2018; 26:4279-4287. [PMID: 29475279 DOI: 10.1364/oe.26.004279] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 02/01/2018] [Indexed: 06/08/2023]
Abstract
Thermal emission control has been attracting increased attention in both fundamental science and many applications including infrared sensing, radiative cooling and thermophotovoltaics. In this paper, a tunable dual-band thermal emitter including phase-changing material Ge2Sb2Te5 (GST) is experimentally demonstrated. Two emission peak wavelengths are at 7.36 μm and 5.40 μm at amorphous phase, and can be continuously tuned to 10.01 μm and 7.56 μm while GST is tuned to crystalline phase. Compared with other dual-band metamaterial emitters, this tunable dual-band thermal emitter is only composed of an array of single-sized GST nanodisks (on a gold film), which can greatly simplify the design and manufacturing process, and pave the way towards dynamical thermal emission control.
Collapse
|
250
|
Chen T, Qiu M, Zhang J, Sun H, Deng C, Zhong Z. Integrated Multifunctional Micelles Co-Self-Assembled from Polypeptides Conjugated with Natural Ferulic Acid and Lipoic Acid for Doxorubicin Delivery. Chemphyschem 2018; 19:2070-2077. [PMID: 29316094 DOI: 10.1002/cphc.201701367] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Indexed: 02/06/2023]
Abstract
The development of safe, easily accessible, and multifunctional nanocarriers is a big topic in nanomedicine research. Here, integrated multifunctional micelles (IMM) were developed by co-self-assembly of poly(ethylene glycol)-b-poly(l-lysine) derivatives with natural ferulic acid (FA) or lipoic acid (LA). FA confers IMM with intrinsic antitumor activity, improved loading of doxorubicin (DOX) through π-π stacking, and reduced DOX cardiotoxicity. LA provides IMM with reversible crosslinking property, which leads to a high colloidal stability with inhibited drug leakage and triggered intracellular DOX release. Notably, our results showed that cRGD-decorated IMM (cRGD-IMM) had a small size (≈56 nm) and superior loading of DOX (27.1 wt. %). Blank cRGD-IMM, though nontoxic to normal cells, exhibited obvious antiproliferative activity against cancer cells including B16F10 and HCT-116 cells at 150 μg FA equiv. mL-1 . DOX-loaded cRGD-IMM displayed enhanced growth inhibition of αv β3 -positive B16F10 and HCT-116 cells, a long elimination half-life of 3.85 h, and a high maximum-tolerated dose of over 100 mg DOX equiv. kg-1 . Histological analysis revealed that DOX-loaded cRGD-IMM at 100 mg DOX equiv. kg-1 caused negligible cardiotoxicity, which is a major issue for the clinical use of DOX. These integrated multifunctional micelles with excellent safety and accessibility have emerged as a new platform for targeted cancer chemotherapy.
Collapse
Affiliation(s)
- Tao Chen
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China), Fax: (+86) 512-65880098
| | - Min Qiu
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China), Fax: (+86) 512-65880098
| | - Jian Zhang
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China), Fax: (+86) 512-65880098
| | - Huanli Sun
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China), Fax: (+86) 512-65880098
| | - Chao Deng
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China), Fax: (+86) 512-65880098
| | - Zhiyuan Zhong
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China), Fax: (+86) 512-65880098
| |
Collapse
|